package com.kqq.seckill.controller;


import com.kqq.seckill.pojo.User;
import com.kqq.seckill.service.IGoodsService;
import com.kqq.seckill.service.IUserService;
import com.kqq.seckill.vo.DetailVo;
import com.kqq.seckill.vo.GoodsVo;
import com.kqq.seckill.vo.RespBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.thymeleaf.context.WebContext;
import org.thymeleaf.spring5.view.ThymeleafViewResolver;
import org.thymeleaf.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.Date;
import java.util.concurrent.TimeUnit;


@Controller
@RequestMapping("/goods")
public class GoodsController {

    @Autowired
    private IUserService userService;
    @Autowired
    private IGoodsService goodsService;
    @Autowired
    private RedisTemplate redisTemplate;
    @Autowired
    private ThymeleafViewResolver thymeleafViewResolver;

    /**
     * 商品列表
     * windows 优化前QPS：1489
     *         缓存QPS:4279
     * Linux  优化前QPS：701
     * @param model
     * @param user
     * @return
     */
    @RequestMapping(value = "/toList",produces = "text/html;charset=utf-8")
    @ResponseBody
    public String toList(Model model,User user,
                         HttpServletResponse response,HttpServletRequest request){
        //Redis中获取页面，如果不为空，直接返回
        ValueOperations valueOperations = redisTemplate.opsForValue();
        String html = (String) valueOperations.get("goodsList");
        if(!StringUtils.isEmpty(html)){
            return html;
        }

//        if(StringUtils.isEmpty(ticket)){
//            return "login";
//        }
//        User user = userService.getUserByCookie(ticket, request, response);
////        User user = (User) session.getAttribute(ticket);
//        if(user==null){
//            return "login";
//        }
        model.addAttribute("user",user);
        model.addAttribute("goodsList",goodsService.findGoodsVo());
        WebContext context = new WebContext(request, response, request.getServletContext(),
                request.getLocale(), model.asMap());
        html = thymeleafViewResolver.getTemplateEngine().process("goodsList",context);
        if(!StringUtils.isEmpty(html)){
            valueOperations.set("goodsList",html,60, TimeUnit.SECONDS);
        }
        return html;
    }

    //商品详情
    @RequestMapping(value = "/toDetail2/{goodsId}",produces = "text/html;charset=utf-8")
    @ResponseBody
    public String toDetail2(Model model, User user, @PathVariable("goodsId") Long goodsId,
                           HttpServletRequest request,HttpServletResponse response){
        ValueOperations valueOperations = redisTemplate.opsForValue();
        String html= (String) valueOperations.get("goodsDetail:"+goodsId);
        if(!StringUtils.isEmpty(html)){
            return html;

        }
        model.addAttribute("user",user);
        GoodsVo goodsVo = goodsService.findGoodsVoByGoodsId(goodsId);
        Date startDate = goodsVo.getStartDate();
        Date endDate = goodsVo.getEndDate();
        Date nowDate = new Date();
        //秒杀状态
        int secKillStatus = 0;
        //秒杀倒计时
        int remainSeconds = 0;
        //秒杀还未开始
        if(nowDate.before(startDate)){
            remainSeconds = (int) ((startDate.getTime()-nowDate.getTime())/1000);
        }else if (nowDate.after(endDate)){
            //秒杀以结束
            secKillStatus = 2;
            remainSeconds = -1;
        }else {
            //秒杀进行中
            secKillStatus = 1;
            remainSeconds = 0;
        }
        model.addAttribute("secKillStatus",secKillStatus);
        model.addAttribute("remainSeconds",remainSeconds);
        model.addAttribute("goods",goodsVo);
        WebContext context = new WebContext(request, response,
                request.getServletContext(), request.getLocale(), model.asMap());
        html = thymeleafViewResolver.getTemplateEngine().process("goodsDetail", context);
        if(!StringUtils.isEmpty(html)){
            valueOperations.set("goodsDetail:"+goodsId,html,60,TimeUnit.SECONDS);
        }
        return html;
    }

    //商品详情
    @RequestMapping("/detail/{goodsId}")
    @ResponseBody
    public RespBean toDetail(Model model, User user, @PathVariable("goodsId") Long goodsId){
        GoodsVo goodsVo = goodsService.findGoodsVoByGoodsId(goodsId);
        Date startDate = goodsVo.getStartDate();
        Date endDate = goodsVo.getEndDate();
        Date nowDate = new Date();
        //秒杀状态
        int secKillStatus = 0;
        //秒杀倒计时
        int remainSeconds = 0;
        //秒杀还未开始
        if(nowDate.before(startDate)){
            remainSeconds = (int) ((startDate.getTime()-nowDate.getTime())/1000);
        }else if (nowDate.after(endDate)){
            //秒杀以结束
            secKillStatus = 2;
            remainSeconds = -1;
        }else {
            //秒杀进行中
            secKillStatus = 1;
            remainSeconds = 0;
        }
        DetailVo detailVo = new DetailVo();
        detailVo.setUser(user);
        detailVo.setGoodsVo(goodsVo);
        detailVo.setSecKillStatus(secKillStatus);
        detailVo.setRemainSeconds(remainSeconds);
        return RespBean.success(detailVo);
    }

}
